On Thu, Apr 05, 2018 at 09:11:38AM +1000, Nicholas Piggin wrote: > Hi, > > I'm seeing some pretty big latencies on a ~idle system when a CPU wakes > out of a nohz idle. Looks like it's due to the taking a lot of remote > locks and cache lines. irqoff trace:
On RT I think we default RT_RUNTIME_SHARE to false, maybe we should do the same for mainline. It's always been a dodgy feature and if we ever figure out how to do FIFO servers this code will be deleted entirely.
